Feature Request: Support for accesing and debugging API

[charlypa]

There should be an easy way for developers to test and invoke all types of front-end APIs in phoenix. Support for the following invoking types of APIs

1. Rest OpenAPI1-to3 https://www.openapis.org/
2. GraphQL https://graphql.org/
3. Http https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods
4. RAML https://raml.org/
5. WSDL ver 1-2 https://www.w3.org/TR/wsdl.html

[abose]

Explain more of the feature request please "?